A vehicle overturned Thursday on the northbound Antelope Valley (14) Freeway in the Santa Clarita area, seriously injuring a woman and blocking the northbound lanes.
The crash was reported about 12:20 p.m. north of Golden Valley Road, according to the California Highway Patrol.
The unidentified woman was trapped in the wreckage for about 15 minutes before she was freed by firefighters, and paramedics took her to a hospital, according to the Los Angeles County Fire Department.
The northbound freeway lanes remained blocked more than 45 minutes after the crash as crews worked to clear the scene.
The circumstances of the crash were under investigation.